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From: Peter Hutterer To: linux-input@vger.kernel.org Cc: Peter Hutterer , Dmitry Torokhov , Benjamin Tissoires , Ping Cheng , Jason Gerecke Subject: [PATCH 4/5] Input: wacom_w8001 - split pen and touch initialization up Date: Mon, 30 Nov 2015 13:38:15 +1000 Message-Id: <1448854696-32625-4-git-send-email-peter.hutterer@who-t.net> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1448854696-32625-1-git-send-email-peter.hutterer@who-t.net> References: <1448854696-32625-1-git-send-email-peter.hutterer@who-t.net> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mail.clearchain.com [127.0.0.1]); Mon, 30 Nov 2015 14:09:20 +1030 (CST) Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is preparation work for splitting it up for two event nodes. The error handling for the touch init failure must be special-cased, a device may respond to a touch query with a zero reply. In this case we don't have a touch device, but we don't have a true failure either. Returning 1 as special value here so we can then restore the true error code on failure. Signed-off-by: Peter Hutterer Acked-by: Benjamin Tissoires --- drivers/input/touchscreen/wacom_w8001.c | 198 ++++++++++++++++++-------------- 1 file changed, 112 insertions(+), 86 deletions(-) diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index cdebf8e..363e510 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -380,12 +380,10 @@ static void w8001_close(struct input_dev *dev) w8001_command(w8001, W8001_CMD_STOP, false); } -static int w8001_setup(struct w8001 *w8001) +static int w8001_detect(struct w8001 *w8001) { struct input_dev *dev = w8001->dev; - struct w8001_coord coord; - struct w8001_touch_query touch; - int error, err_pen, err_touch; + int error; error = w8001_command(w8001, W8001_CMD_STOP, false); if (error) @@ -399,101 +397,122 @@ static int w8001_setup(struct w8001 *w8001) __set_bit(INPUT_PROP_DIRECT, dev->propbit); + return 0; +} + +static int w8001_setup_pen(struct w8001 *w8001) +{ + struct input_dev *dev = w8001->dev; + struct w8001_coord coord; + int error; + /* penabled? */ - err_pen = w8001_command(w8001, W8001_CMD_QUERY, true); - if (!err_pen) { - __set_bit(BTN_TOUCH, dev->keybit); - __set_bit(BTN_TOOL_PEN, dev->keybit); - __set_bit(BTN_TOOL_RUBBER, dev->keybit); - __set_bit(BTN_STYLUS, dev->keybit); - __set_bit(BTN_STYLUS2, dev->keybit); + error = w8001_command(w8001, W8001_CMD_QUERY, true); + if (error) + return error; - parse_pen_data(w8001->response, &coord); - w8001->max_pen_x = coord.x; - w8001->max_pen_y = coord.y; + __set_bit(BTN_TOUCH, dev->keybit); + __set_bit(BTN_TOOL_PEN, dev->keybit); + __set_bit(BTN_TOOL_RUBBER, dev->keybit); + __set_bit(BTN_STYLUS, dev->keybit); + __set_bit(BTN_STYLUS2, dev->keybit); - input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); - input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); - input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); - input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); - input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); - if (coord.tilt_x && coord.tilt_y) { - input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0); - input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0); - } - w8001->id = 0x90; - strlcat(w8001->name, " Penabled", sizeof(w8001->name)); + parse_pen_data(w8001->response, &coord); + w8001->max_pen_x = coord.x; + w8001->max_pen_y = coord.y; + + input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0); + input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0); + input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION); + input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION); + input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0); + if (coord.tilt_x && coord.tilt_y) { + input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0); + input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0); } + w8001->id = 0x90; + strlcat(w8001->name, " Penabled", sizeof(w8001->name)); + + return 0; +} + +static int w8001_setup_touch(struct w8001 *w8001) +{ + struct input_dev *dev = w8001->dev; + struct w8001_touch_query touch; + int error; + /* Touch enabled? */ - err_touch = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true); + error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true); + if (error) + return error; /* * Some non-touch devices may reply to the touch query. But their * second byte is empty, which indicates touch is not supported. */ - if (!err_touch && w8001->response[1]) { - err_touch = 1; - - __set_bit(BTN_TOUCH, dev->keybit); - __set_bit(BTN_TOOL_FINGER, dev->keybit); - - parse_touchquery(w8001->response, &touch); - w8001->max_touch_x = touch.x; - w8001->max_touch_y = touch.y; - - if (w8001->max_pen_x && w8001->max_pen_y) { - /* if pen is supported scale to pen maximum */ - touch.x = w8001->max_pen_x; - touch.y = w8001->max_pen_y; - touch.panel_res = W8001_PEN_RESOLUTION; - } - - input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); - input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); - input_abs_set_res(dev, ABS_X, touch.panel_res); - input_abs_set_res(dev, ABS_Y, touch.panel_res); - - switch (touch.sensor_id) { - case 0: - case 2: - w8001->pktlen = W8001_PKTLEN_TOUCH93; - w8001->id = 0x93; - strlcat(w8001->name, " 1FG", sizeof(w8001->name)); - break; - - case 1: - case 3: - case 4: - w8001->pktlen = W8001_PKTLEN_TOUCH9A; - strlcat(w8001->name, " 1FG", sizeof(w8001->name)); - w8001->id = 0x9a; - break; - - case 5: - w8001->pktlen = W8001_PKTLEN_TOUCH2FG; - - __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); - input_mt_init_slots(dev, 2, 0); - input_set_abs_params(dev, ABS_MT_POSITION_X, - 0, touch.x, 0, 0); - input_set_abs_params(dev, ABS_MT_POSITION_Y, - 0, touch.y, 0, 0); - input_set_abs_params(dev, ABS_MT_TOOL_TYPE, - 0, MT_TOOL_MAX, 0, 0); - - strlcat(w8001->name, " 2FG", sizeof(w8001->name)); - if (w8001->max_pen_x && w8001->max_pen_y) - w8001->id = 0xE3; - else - w8001->id = 0xE2; - break; - } + if (!w8001->response[1]) + return 1; + + __set_bit(BTN_TOUCH, dev->keybit); + __set_bit(BTN_TOOL_FINGER, dev->keybit); + + parse_touchquery(w8001->response, &touch); + w8001->max_touch_x = touch.x; + w8001->max_touch_y = touch.y; + + if (w8001->max_pen_x && w8001->max_pen_y) { + /* if pen is supported scale to pen maximum */ + touch.x = w8001->max_pen_x; + touch.y = w8001->max_pen_y; + touch.panel_res = W8001_PEN_RESOLUTION; + } + + input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0); + input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0); + input_abs_set_res(dev, ABS_X, touch.panel_res); + input_abs_set_res(dev, ABS_Y, touch.panel_res); + + switch (touch.sensor_id) { + case 0: + case 2: + w8001->pktlen = W8001_PKTLEN_TOUCH93; + w8001->id = 0x93; + strlcat(w8001->name, " 1FG", sizeof(w8001->name)); + break; + + case 1: + case 3: + case 4: + w8001->pktlen = W8001_PKTLEN_TOUCH9A; + strlcat(w8001->name, " 1FG", sizeof(w8001->name)); + w8001->id = 0x9a; + break; + + case 5: + w8001->pktlen = W8001_PKTLEN_TOUCH2FG; + + __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit); + input_mt_init_slots(dev, 2, 0); + input_set_abs_params(dev, ABS_MT_POSITION_X, + 0, touch.x, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_Y, + 0, touch.y, 0, 0); + input_set_abs_params(dev, ABS_MT_TOOL_TYPE, + 0, MT_TOOL_MAX, 0, 0); + + strlcat(w8001->name, " 2FG", sizeof(w8001->name)); + if (w8001->max_pen_x && w8001->max_pen_y) + w8001->id = 0xE3; + else + w8001->id = 0xE2; + break; } strlcat(w8001->name, " Touchscreen", sizeof(w8001->name)); - return !err_pen || !err_touch; + return 0; } /* @@ -522,7 +541,7 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) { struct w8001 *w8001; struct input_dev *input_dev; - int err; + int err, err_pen, err_touch; w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL); input_dev = input_allocate_device(); @@ -541,10 +560,17 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) if (err) goto fail2; - err = w8001_setup(w8001); + err = w8001_detect(w8001); if (err) goto fail3; + err_pen = w8001_setup_pen(w8001); + err_touch = w8001_setup_touch(w8001); + if (err_pen && err_touch) { + err = (err_touch == 1) ? err_pen : err_touch; + goto fail3; + } + input_dev->name = w8001->name; input_dev->phys = w8001->phys; input_dev->id.product = w8001->id;